—The Chengdu Horticultural Exhibition(成都园艺博览会)is really excellent! Thanks for inviting me here!
—______
I’m sorry.
You’re welcome.
No problem.
He _____in Xinxiang for five years when I heard his news.
We all should make a contribution to ______ our environment.
Neither my classmates nor my teacher_____ chess better than me.
_____ the development of the country, most people are living happily.
More than _____children took part in activities last month.